One of the most popular trim levels of Nissan's most popular car, due to its combination of features, performance, and price, the 2005 Nissan Altima 2.5 S comes with a 175-hp, 2.5-liter I4 engine and choice of 5-speed manual or 4-speed automatic transmission.  It rides on 16-inch alloy wheels and earns five stars in frontal impact test thanks to its dual front airbags.  The 2005 Altima 2.5 S earns only three stars in side impact tests, but side bags for both rows are offered as an option.

The 2.5 S adds air conditioning, a CD player, cruise control, and power mirrors to the power windows and locks, tachometer, and intermittent wipers found on the base model.  Interior legroom is ample for a mid-sized, and the rear seats split-fold 60/40 to expand the 16 cubic foot trunk.  There are a lot more options available on the 2005 Altima 2.5 S, including ABS brakes, foglights, automatic headlights, and an auto-dimming rearview mirror.  Interior comfort is enhanced with heated leather seats and mirrors, a power driver's seat, trip computer, and a sunroof.  Good engine performance, tight handling, decent 24/31 mpg, lots of interior space, and a sporty look attract owners.  Disappointments include cheap-looking plastic interior materials and some engine noise on the highway.